I am just curious as to what I should start to check to aleiveate this issue it'll buck a little over idle if u give it a little gas out of gear the Rpms will bounce. I tried unplugging the iacv no change the car performs really well out on the highway it's just in town which is aggravating any help would be appreciated and the car does idle fine

Motor is a jdm b18c

 

Have you cleaned the IACV and FITV?

Have you cleaned the throttle body? Is the throttle cable adjusted too tightly? There should be about 1/2" slack in the cable.

 

I just cleaned the iacv the motor has no fitv on the throttle body I just order a new throttle body gasket from Honda I'll check that throttle cable too

Thanks

 

Cleaned the iacv to no avail the throttle cable is also not to blame

Hmmm what could it be

 

Is the throttle body dirty? Have you tried to adjust the idle speed by the procedure described in the service manual?

Have you checked output voltage of the TPS and resistance of the ECT sensor when the engine is warmed up?

 

Not yet I'll check it when I pull the throttle body it prolly is dirty lol

The engine acts the same regardless of temp tho

 

Resistance of the coolant temp sensor is 1.1 ohms
Any more help?
I'll check the tps next

 

The coolant temp sensor should read 200-400 Ohms when the engine is warmed up. If not, this could be the problem.

 

I just checked the tps reading .50 closed and
4.5 wot...

The coolant temp sensor is the one on the side of the head with 2 wires running to it right just wanna be sure I checked the right one...

 

Yes, it's the 2-wire sensor below the distributor. The connector should have a Red/Wht wire and a Grn/Wht wire.

 

Yep that was it also noticed the idle screw was screwed out most of the way adjusted it down it no longer fluctuates but the cel is still on and I have no VTEC engagement now lol (guess they they where to lazy to try to figure out the problem)

 

Will be replacing the coolant temp sensor next hopefully this take care of the problem also noticed some black soot on my back bumper mustve been running a bit rich due to that I guess

 

Replaced coolant temp sensor no change....

I notice that idle is not higher when I cold start it....maybe the iacv is bad I dunno

What else can I try

Also car does not have a fitv on it

 

Still haven't resolved this issue could it have anything to due with wiring or my chipped ecu?